Senior Software Engineer – Device Connectivity, Go

1KOMMA5°

Senior Software Engineer integrating OEM devices into Heartbeat platform for renewable energy management. Collaborating with cross-functional teams and contributing to the entire product lifecycle.

Posted 7/10/2026full-timeBerlin • 🇩🇪 GermanySeniorWebsite

Tech Stack

Tools & technologies

CloudDNSFirewallsGoIoTTCP/IP

About the role

Key responsibilities & impact

Own the technical integration of inverters, batteries, charging infrastructure, and heat pumps into our Heartbeat energy management system, driving projects end-to-end to deliver solutions on time.
Ensure seamless communication and interoperability between different OEM devices.
Implement communication protocols such as Modbus TCP, OCPP, MQTT, EEbus.
Develop, deploy, and maintain services on our IoT gateway using Go programming.
Diagnose network issues across LAN/WAN, VPN, firewalls, and protocols, and turn that understanding into resilient edge services.
Conduct testing of our energy management system in our lab in Berlin.
Collaborate with cross-functional teams to ensure software meets performance and reliability standards.
Provide expert-level support to both internal and external stakeholders.
Foster a culture of experiment-driven innovation within the team

Requirements

What you’ll need

Bachelor's or Master's degree in Computer Science, Electrical/Electronics Engineering, Control Engineering or related field.
Proven experience in IoT development and integration, with a focus on integrating diverse OEM devices.
Hands-on experience in the development of software modules for IoT devices.
Experience with Go programming is highly preferred.
Proficiency in communication protocols such as Modbus TCP, OCPP, and MQTT.
Solid understanding of local area networks (TCP/IP, LAN/WLAN) and experience with device discovery and scanning mechanisms within home networks.
Familiarity with DevOps practices and tools, including continuous integration and deployment (CI/CD) pipelines.
Prior exposure to energy management systems is desirable.
Outstanding, proactive communication skills: you excel at engaging stakeholders and initiating cross-team collaboration
Excellent troubleshooting and problem-solving skills.
Experience quickly finding your way around in cross-functional teams in a fast pace, interdisciplinary working environment
An agile and result-oriented mindset and you consider yourself a team player
Very good knowledge of spoken and written English, German is a plus
Bonus points for: Experience in network or systems administration (routing, firewalls, DNS, DHCP) in a production environment.
Familiarity with cloud platforms (ideally Google cloud) and their integration in IoT solutions.
Previous experience in providing support to international stakeholders.
Certifications related to IoT and energy management.

Benefits

Comp & perks

You are part of an international, dynamic, and highly motivated team of people who have proven to make things happen
You move in flat hierarchies and have short decision-making paths.
You can learn a lot quickly and get involved at different levels
You will be welcomed by a friendly and familiar team
You are part of the energy transition and recognize in your daily work what purpose it serves
You can work in one of our offices in Hamburg, Berlin or Munich
You create a healthy balance alongside your work and enjoy all the benefits of the EGYM Wellpass
Benefits and discounts are yours with Futurebens
Whether city bike or e-bike - be flexible with our job bike leasing and do something good for the environment at the same time

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

IoT DevelopmentGo ProgrammingCommunication ProtocolsNetwork TroubleshootingDevice DiscoveryCloud Platforms (Google Cloud)Energy Management SystemsSystems AdministrationContinuous IntegrationDeployment

Soft Skills

Proactive CommunicationProblem-SolvingTeam CollaborationAgile MindsetStakeholder Engagement

Certifications

IoT CertificationsEnergy Management Certifications